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تعداد نتایج: 42094 فیلتر نتایج به سال:
Background: Pattern recognition receptors (PRRs) are the main sensors of pathogen and danger signals in innate immunity of which Toll Like Receptors (TLRs) are the most studied ones. The contribution of PRRs in cerebral inflammation induced by microbial infection, tissue damage and cancer has not extensively been addressed so far. Glioma is the most common tumor of the central nervous system an...
The nucleus of mature sperm contains a complex population of transcripts such as mRNAs and miRNAs which expressed and accumulated during process of spermatogenesis however in spermatozoa, transcription is inert. The spermatozoa do not have cytoplasmic ribosomal compounds and translation apparatus. However, spermatozoa can translate cytoplasmic mRNAs de novo, using mitochondrial poly...
Protein-coding genes account for only a small fraction of the human genome and most of the genomic sequences are transcriptionally silent, but recent observations indicate significant functional elements, including non-coding protein transcripts in the human genome. Long non-coding RNAs (lncRNAs) have been defined as transcripts of >200 nucleotides without protein-coding capacity that perform t...
Background: Any irregularities in self-renewal/differentiation balance in endometriotic MSCs can change their fate and function, resulting in endometriosis development. This study aimed to evaluate the expression of OCT4 transcripts (OCT4A, OCT4B, and OCT4B1), SOX2, and NANOG in endometriotic MSCs to show their aberrant expression and to support self-renewal/differentiation imbalance in these c...
The present study intended to compare the complaint responses used by President Rouhani and President Obama in the Iranian and US news interview contexts. For this purpose, Boxer’s (1993) six types of indirect complaint responses were adopted: ‘ignorance’, ‘questions’, ‘topic switch’, ‘contradiction’, ‘joke/teasing’, ‘advice/lecture’ and ‘agreement/commiseration’. The transcripts of the live ne...
We examined the effects of mitomycin C and aminopterin on ovulation in vivo and, fertilization, subsequent cleavage and implantation in slc-ICR female mice using methods of fertilization and culture in vitro. Chemicals were injected into mice at the MI (meiosis I) stage or 3 hours before the MI stage in order to examine their toxicity. Mitomycin C did not affect ovulation, but decreased the rat...
Piwi proteins function in an RNAi-like pathway that silences transposons. Piwi-associated RNAs, also known as piRNAs, act as a guide to identify Piwi targets. The tudor domain-containing protein Tdrd1 has been linked to this pathway but its function has thus far remained unclear. We show that zebrafish Tdrd1 is required for efficient Piwi-pathway activity and proper nuage formation. Furthermore...
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